Illuminated panel

ABSTRACT

The disclosure relates in general to illuminated panels resembling windows, and more particularly, to a system containing a light source, a diffuser and a panel combined in such a fashion as to resemble a window, skylight or curtain wall.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority and the benefit of U.S. ProvisionalApplication No. 62/747,555, filed Oct. 18, 2018, entitled “IlluminatedPanel”, which is hereby incorporated herein by reference in itsentirety.

FIELD

The disclosure relates in general to illuminated panels resemblingwindows, and more particularly, to a system containing a light source, adiffuser and a front panel combined with a frame in such a fashion as toresemble a window, skylight or curtain wall.

BACKGROUND

It is frequently desirable to have windows or skylights in rooms, asroom occupants may feel more at ease and may have increased productivityresulting therefrom. Known lighting fixtures often do little to createthe feeling of natural lighting. Historically, windows have only beenpossible on walls of rooms at the outside perimeter of a building, andskylights only on ceilings of rooms at the top of a building, asexterior access is typically necessary for the passive window orskylight to admit sunlight. The result is the problem that the benefitsof such exterior lighting are available only to certain occupants of thebuilding.

In recent years, the performance of LEDs (Light Emitting Diodes) hasimproved to the point where their CCT (Coordinated Color Temperature)and CRI (Color Rendition Index) may be selected to closely resemble thatof sunlight, both at high noon as well as at other times of the day. Itwould be desirable to have an LED system that could be used to resemblewindows or skylights without requiring the room using such a system tohave access to an exterior surface of the building. It would be furtherdesirable if such a system could closely resemble physically atraditional window or skylight. It would also be desirable if such asystem could have its CCT and CRI adjustable to resemble other times ofthe day.

SUMMARY

In one or more embodiments, the system utilizes a frame containing anumber of elements. The frame contains a light source with control andpower circuitry (also referred to herein as “control circuitry,” “powercircuitry” or “LED driver”), a diffuser and a front panel. The lightsource when controlled to the “on” state illuminates the diffuser, whichdiffuses the light source in such a way as to appear approximatelyuniform over its surface. The light from the diffuser passes through thefront panel, providing the visual impression of depth to the lightsource. The frame may include an infinity edge, creating the effect thatthe emitting surface of the front panel is detached from, and floatingabove the frame. The frame may also include a shroud to more closelyresemble a traditional window or skylight. For example, the shroud canbe coupled to and disposed a non-zero distance from the frame.

In one or more embodiments, the light source may be a set of white LEDsand the power circuitry may be a constant current driver to run theLEDs. The control circuity, if present, may be an on/off switch, or mayprovide the ability to set the brightness of the LEDs by controlling theoutput current of the power circuitry.

In another embodiment, the light source may be a set of multi-coloredLEDs, such as red, green and blue (RGB). The power circuitry may be aset of constant current drivers to run the set of LEDs at differentrespective currents. The control circuitry may provide ability to setthe color, CCT and/or CRI of the LEDs by controlling the output currentsof the drivers of the power circuitry.

In one or more embodiments, the diffuser comprises a sheet oftranslucent material, with the light source placed along one or more ofits edges. In another embodiment, the diffuser comprises a panelcontaining diffusion beads. In another embodiment, the diffuser may bean etched light guide plate, made of acrylic. In a further embodiment,the diffuser may be an LCD (Liquid Crystal Display) panel.

In one or more embodiments, the front panel may be glass or transparentplastic. The front panel may be offset (by a non-zero distance) forwardfrom the diffuser, to provide a sense of depth to the light coming fromthe diffuser.

In one or more embodiments, the frame may be aluminum or wood.

In one or more embodiments, a system including such frames may bemounted together by an array of vertical or horizontal wall mountchannels, with each individual frame having hardware to mount againstthe channels.

Such embodiments may be made to closely resemble windows, skylights orcurtain walls, or panels thereof, and thus may be used for example, toresemble such systems even in the interior of buildings.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings are included to provide a furtherunderstanding of the disclosure, and are incorporated in and constitutea part of this specification.

FIG. 1 is a diagram of an illuminated panel configured to emit lightresembling that from a window or skylight, according to an embodiment.

FIG. 2 is a diagram of an illuminated panel with controllablebrightness, configured to emit light resembling that from a window orskylight, according to another embodiment.

FIG. 3 is a diagram of an illuminated panel with controllable brightnessand color, configured to emit light resembling that from a window orskylight, according to another embodiment.

FIG. 4 is a diagram of a frame containing an illuminated panel,according to an embodiment.

FIG. 5 is a diagram of a frame mounted into an array of such frames,according to an embodiment.

DETAILED DESCRIPTION

Reference will now be made in detail to the various embodiments,examples of which are illustrated in the accompanying drawings. Whereverpossible, the same reference numbers are used in the drawings and thedescription to refer to the same or like parts.

According to the design characteristics, a detailed description of theembodiments is given below.

FIG. 1 is a diagram of an illuminated panel 100 configured to emit lightresembling that from a window or skylight, according to an embodiment.As shown in FIG. 1, light can be emitted from a light engine 110, whichin an embodiment may be a linear row of LEDs, and which is placed alongan edge 121 of a diffuser 120. In operation, the light engine 110 isdriven by power circuitry 130, which may be for example an ACline-powered constant current driver. In another embodiment, multiplelight engines 110 may emit light into multiple edges 121 of the diffuser120.

The light emitted by the light engine 110 goes through an edge 121 ofthe diffuser 120 in a direction 125, and is then diffused by thediffuser 120. The resulting light is emitted by the diffuser 120substantially perpendicular to the direction 125 of emission by thelight engine 110, which may be both in a forward direction 140 and abackward direction 141, or primarily in the forward direction 140. Aback panel 150 comprises, for example, a burnished metal layer and areflector layer that collectively define a mirror. In this example, thereflector layer is disposed between the burnished metal layer and thediffuser 120. The back panel 150 can be attached to the frame behind thediffuser 120 to reflect light that is emitted from the diffuser 120 inthe backward direction 141. The backward direction 141 and the forwarddirection 140 are substantially perpendicular to the direction 125 inthat light from the diffuser 120 may vary from the backward direction141 and the forward direction 140 due to the nature of the diffuser 120.Such light from diffuser 120 will then vary a corresponding amount fromthe direction 125.

The light emitted from the diffuser 120 in the forward direction 140next passes through the front panel 160, which in an embodiment may beglass or plastic. For the embodiment shown in FIG. 1, the front panel160 is separated by a certain non-zero distance 170 from the diffuser120, which gives the illuminated panel 100 the appearance of depth. Thenon-zero distance 170 can be a function of the overall size of theillumination panel 100 and the brightness of the light emitted from thediffuser 120 in the forward direction 140 so that a desired appearanceof depth can be obtained. The non-zero distance 170 can be, for example,one tenth of an inch, one half of an inch, one inch, two inches or threeinches. In other embodiments, the distance between the diffuser and thefront panel can be zero or substantially zero (allowing formanufacturing variations). The light passing through the front panel 160is the light that is emitted from the illuminated panel 100. Note thatthe front panel 160 has a non-zero transmittance including, for example,100% transparent or less than 100% transparent such as 99% transparent,98% transparent, 95% transparent, 75% transparent, 50% transparent, 25%transparent, 10% transparent or 1% transparent.

As shown in FIG. 1, the light engine 110, diffuser 120 and back panel150 may all be mounted together in a base extrusion 165, which is partof the illuminated panel 100. The front panel 160 may be separatelymounted by a gasket 175 which is part of the illuminated panel 100. Theilluminated panel 100 may include an infinity edge 180. Note thatalthough a particular structure of the frame is shown in FIG. 1, otherframe structures are possible. For example, the infinity edge isoptional and not included in some other embodiments.

FIG. 2 is a diagram of an illuminated panel 200 with controllablebrightness, configured to emit light resembling that from a window orskylight, according to another embodiment. As shown in FIG. 2, the lightengine 110 is driven by the power and control circuitry 210 (alsoreferred to herein as “control circuitry,” “power circuitry” or “LEDdriver”). The power circuitry of the power and control circuitry 210 maybe for example an AC line-powered adjustable current driver. The controlcircuitry of the power and control circuitry 210 may respond to theexternal ambient or to control signals to adjust the current to thelight engine 110, causing the light output from the light engine 110 todim or brighten.

FIG. 3 is a diagram of an illuminated panel 300 with controllablebrightness and color, configured to emit light resembling that from awindow or skylight, according to another embodiment. As shown in FIG. 3,the light engine 310 comprising multiple colors of LEDs, for examplered, green and blue (not shown). The light engine 310 is driven by thepower and control circuitry 320. The power circuitry of the power andcontrol circuitry 320 may be for example multiple AC line-poweredadjustable current drivers, one for each color of LEDs. The controlcircuitry of the power and control circuitry 320 may respond to theexternal ambient or to control signals to adjust the currents to themultiple colors of LEDs of the light engine 310, causing the lightoutput from the light engine 310 to dim or brighten, assume differentCCT or CRI or change color.

FIG. 4 is a diagram of a frame 400 containing an illuminated panel 410,according to an embodiment. As shown in FIG. 4, the frame 400 comprisesa front 401, a back 402 and four sides 403. The frame 400 may bedesigned in such a way that the elements of the illuminated panel 410may be inserted into the frame 400 before the frame 400 is assembled.The illuminated panel 410 can be, for example, any of the illuminatedpanels 100, 200 or 300 of FIG. 1, 2 or 3, respectively, discussed above.The frame 400 further may be designed in such a way that the elements ofthe illuminated panel 410 are held rigidly in place by the frame 400.

FIG. 5 is a diagram of an array 500 of such frames 510 mounted together,according to an embodiment. The frame 510 of FIG. 5 can be, for example,the frame 400 of FIG. 4. As shown in FIG. 5, vertical or horizontal wallmount channels 520 are used to position the array 500 of such frames510, while hardware 530 on the rear of each frame 510 is used to mountthe frames 510 against the channels 520. Although not shown in FIGS. 4and 5, the frame 400 of FIG. 4 and the array 500 of frames 510 can eachbe attached to a shroud that surrounds and covers the perimeter of thatframe 400 and array 500. Such a shroud can be, for example, a solid,non-transparent material that covers the outermost surfaces includingthe vertical and horizontal wall mount channels (such as wall mountchannels 520 shown in FIG. 5).

An embodiment includes a method of operation. In this embodiment, asignal is received from a LED driver. Then, light is sent by at leastone LED (such as light engine 110 in FIG. 1), based on the signal, intoan edge of the diffuser at a first direction (e.g., edge 121 of diffuser120 in a direction 125 of FIG. 1) such that light exits the diffuser ata second direction (e.g., direction 141 in FIG. 1) substantiallyperpendicular to the first direction. In another embodiment, the signalrepresents a brightness of output from a light engine coupled to thecurrent driver.

It will be apparent to those skilled in the art that variousmodifications and variation can be made to the disclosed embodiments. Inview of the foregoing, it is intended that the disclosure covermodifications and variations of the disclosed embodiments.

While various embodiments have been described and illustrated herein, avariety of other means and/or structures for performing the functionand/or obtaining the results and/or one or more of the advantagesdescribed herein. More generally, all parameters, dimensions, materials,and configurations described herein are meant to be an example and thatthe actual parameters, dimensions, materials, and/or configurations willdepend upon the specific application or applications. It is, therefore,to be understood that the foregoing embodiments are presented by way ofexample only and that embodiments may be practiced otherwise than asspecifically described and claimed. Embodiments of the presentdisclosure are directed to each individual feature, system, article,material, kit, and/or method described herein. In addition, anycombination of two or more such features, systems, articles, materials,kits, and/or methods, if such features, systems, articles, materials,kits, and/or methods are not mutually inconsistent, is included withinthe inventive scope of the present disclosure. Still further, someembodiments disclosed herein are distinguishable over prior artreferences by specifically lacking one or more features disclosed in theprior art; that is, claims to such embodiments may include negativelimitations so as to be distinguished from the prior art.

The indefinite articles “a” and “an,” as used herein in thespecification and in the claims, unless clearly indicated to thecontrary, should be understood to mean “at least one.”

The phrase “and/or,” as used herein in the specification and in theclaims, should be understood to mean “either or both” of the elements soconjoined, i.e., elements that are conjunctively present in some casesand disjunctively present in other cases. Multiple elements listed with“and/or” should be construed in the same fashion, i.e., “one or more” ofthe elements so conjoined. Other elements may optionally be presentother than the elements specifically identified by the “and/or” clause,whether related or unrelated to those elements specifically identified.Thus, as a non-limiting example, a reference to “A and/or B”, when usedin conjunction with open-ended language such as “comprising” can refer,in one embodiment, to A only (optionally including elements other thanB); in another embodiment, to B only (optionally including elementsother than A); in yet another embodiment, to both A and B (optionallyincluding other elements); etc.

As used herein in the specification and in the claims, “or” should beunderstood to have the same meaning as “and/or” as defined above. Forexample, when separating items in a list, “or” or “and/or” shall beinterpreted as being inclusive, i.e., the inclusion of at least one, butalso including more than one, of a number or list of elements, and,optionally, additional unlisted items. Only terms clearly indicated tothe contrary, such as “only one of” or “exactly one of,” or, when usedin the claims, “consisting of,” will refer to the inclusion of exactlyone element of a number or list of elements. In general, the term “or”as used herein shall only be interpreted as indicating exclusivealternatives (i.e. “one or the other but not both”) when preceded byterms of exclusivity, such as “either,” “one of,” “only one of,” or“exactly one of” “Consisting essentially of,” when used in the claims,shall have its ordinary meaning as used in the field of patent law.

As used herein in the specification and in the claims, the phrase “atleast one,” in reference to a list of one or more elements, should beunderstood to mean at least one element selected from any one or more ofthe elements in the list of elements, but not necessarily including atleast one of each and every element specifically listed within the listof elements and not excluding any combinations of elements in the listof elements. This definition also allows that elements may optionally bepresent other than the elements specifically identified within the listof elements to which the phrase “at least one” refers, whether relatedor unrelated to those elements specifically identified. Thus, as anon-limiting example, “at least one of A and B” (or, equivalently, “atleast one of A or B,” or, equivalently “at least one of A and/or B”) canrefer, in one embodiment, to at least one, optionally including morethan one, A, with no B present (and optionally including elements otherthan B); in another embodiment, to at least one, optionally includingmore than one, B, with no A present (and optionally including elementsother than A); in yet another embodiment, to at least one, optionallyincluding more than one, A, and at least one, optionally including morethan one, B (and optionally including other elements); etc.

In the claims, as well as in the specification above, all transitionalphrases such as “comprising,” “including,” “carrying,” “having,”“containing,” “involving,” “holding,” “composed of,” and the like are tobe understood to be open-ended, i.e., to mean including but not limitedto. Only the transitional phrases “consisting of” and “consistingessentially of” shall be closed or semi-closed transitional phrases,respectively.

What is claimed is:
 1. An apparatus, comprising: a frame; at least oneLED disposed within the frame; an LED driver coupled to the at least oneLED; a diffuser disposed within the frame, the at least one LEDconfigured to light an edge of the diffuser at a first direction suchthat light exits the diffuser at a second direction substantiallyperpendicular to the first direction; and a panel disposed within theframe and coupled to the diffuser such that panel passes the light fromthe diffuser in the second direction.
 2. The apparatus of claim 1,wherein the panel is coupled to the diffuser at a non-zero distance fromthe diffuser.
 3. The apparatus of claim 1, wherein the at least one LEDis a white LED.
 4. The apparatus of claim 1, wherein: the at least oneLED is a white LED, and the LED driver is configured to control abrightness of the at least one white LED.
 5. The apparatus of claim 1,wherein the at least one LED is three different colors of LEDs.
 6. Theapparatus of claim 1, wherein: the at least one LED is three differentcolors of LEDs, and the LED driver is configured to control a colorand/or a brightness of the three different color of LEDs.
 7. Theapparatus of claim 1, wherein the diffuser is an etched light guideplate and made of acrylic.
 8. The apparatus of claim 1, wherein thediffuser is a panel containing diffusion beads.
 9. The apparatus ofclaim 1, wherein the diffuser is an LCD panel.
 10. The apparatus ofclaim 1, wherein the panel is glass.
 11. The apparatus of claim 1,wherein the panel is plastic.
 12. The apparatus of claim 1, furthercomprising: a shroud coupled to the frame and disposed a non-zerodistance from the frame.
 13. The apparatus of claim 1, wherein the framehas an infinity edge.
 14. The apparatus of claim 1, wherein the frame isa first frame, the apparatus further comprising: a plurality of framesincluding the first frame, the plurality of frames having channelsallowing each said frame from the plurality of frames to be mountedtogether, each frame from the plurality of frames having hardware tomount each frame from the plurality of frames to the channels.
 15. Amethod, comprising: receiving, from a LED driver, a signal; sendinglight, based on the signal, into an edge of the diffuser at a firstdirection such that light exits the diffuser at a second directionsubstantially perpendicular to the first direction, the diffuserdisposed a non-zero distance from a panel; and passing the light throughthe panel in the second direction.
 16. The method of claim 15, whereinthe panel is coupled to the diffuser at a non-zero distance from thediffuser.
 17. The method of claim 14, wherein: the signal representing abrightness of output from the at least one LED coupled to the LEDdriver.